Charney equation
E542052
The Charney equation is a fundamental quasi-geostrophic equation in atmospheric dynamics that describes large-scale Rossby waves and mid-latitude weather patterns on a rotating planet.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Charney equation canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5696255 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Charney equation Context triple: [Jule Gregory Charney, knownFor, Charney equation]
-
A.
Clausius–Clapeyron relation
The Clausius–Clapeyron relation is a fundamental thermodynamic equation that describes how the pressure and temperature of a phase transition, such as boiling or condensation, are related.
-
B.
Butler–Volmer equation
The Butler–Volmer equation is a fundamental relation in electrochemistry that describes how the rate of an electrode reaction (current density) depends on the electrode potential and reaction kinetics.
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C.
Nernst–Planck equation
The Nernst–Planck equation is a fundamental relation in electrochemistry that describes the flux of charged species under the combined influence of diffusion, electric fields, and, in extended forms, convection.
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D.
Sievers' law
Sievers' law is a historical phonological rule in Indo-European linguistics that explains the alternation between consonantal and vocalic forms of certain sounds (notably *y and *w) depending on the weight of the preceding syllable.
-
E.
Gibbs–Duhem equation
The Gibbs–Duhem equation is a fundamental thermodynamic relation that links changes in chemical potential, temperature, and pressure for multicomponent systems, ensuring consistency among intensive variables.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Charney equation Target entity description: The Charney equation is a fundamental quasi-geostrophic equation in atmospheric dynamics that describes large-scale Rossby waves and mid-latitude weather patterns on a rotating planet.
-
A.
Clausius–Clapeyron relation
The Clausius–Clapeyron relation is a fundamental thermodynamic equation that describes how the pressure and temperature of a phase transition, such as boiling or condensation, are related.
-
B.
Butler–Volmer equation
The Butler–Volmer equation is a fundamental relation in electrochemistry that describes how the rate of an electrode reaction (current density) depends on the electrode potential and reaction kinetics.
-
C.
Nernst–Planck equation
The Nernst–Planck equation is a fundamental relation in electrochemistry that describes the flux of charged species under the combined influence of diffusion, electric fields, and, in extended forms, convection.
-
D.
Sievers' law
Sievers' law is a historical phonological rule in Indo-European linguistics that explains the alternation between consonantal and vocalic forms of certain sounds (notably *y and *w) depending on the weight of the preceding syllable.
-
E.
Gibbs–Duhem equation
The Gibbs–Duhem equation is a fundamental thermodynamic relation that links changes in chemical potential, temperature, and pressure for multicomponent systems, ensuring consistency among intensive variables.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
equation in atmospheric dynamics
ⓘ
partial differential equation ⓘ quasi-geostrophic equation ⓘ |
| appliesTo |
Earth atmosphere
ⓘ
linked to:
Earth’s atmosphere
rotating planets ⓘ |
| assumes |
Boussinesq or shallow-atmosphere approximation
ⓘ
hydrostatic atmosphere ⓘ small Froude number ⓘ small Rossby number ⓘ |
| basedOn |
geostrophic balance
ⓘ
hydrostatic balance ⓘ quasi-geostrophic approximation ⓘ |
| canBe | linearized for small-amplitude Rossby waves ⓘ |
| captures |
dispersion of large-scale atmospheric waves
ⓘ
westward phase propagation of Rossby waves ⓘ |
| describes |
large-scale Rossby waves
ⓘ
mid-latitude weather patterns ⓘ |
| domain | synoptic and planetary scales ⓘ |
| expressedIn |
isobaric coordinates
ⓘ
pressure coordinates ⓘ |
| field |
atmospheric science
ⓘ
geophysical fluid dynamics ⓘ meteorology ⓘ |
| formulatedFor | mid-latitude beta-plane ⓘ |
| governs | evolution of quasi-geostrophic potential vorticity ⓘ |
| historicalContext | developed in mid-20th century ⓘ |
| includesTerm |
beta effect
ⓘ
planetary vorticity gradient ⓘ relative vorticity ⓘ |
| influenced | development of modern numerical weather prediction ⓘ |
| mathematicalForm | nonlinear partial differential equation ⓘ |
| namedAfter | Jule Gregory Charney ⓘ |
| neglects |
ageostrophic inertia-gravity waves
ⓘ
friction at leading order ⓘ |
| relatedTo |
Rossby wave dispersion relation
ⓘ
linked to:
Rossby waves
barotropic vorticity equation ⓘ beta-plane approximation ⓘ quasi-geostrophic potential vorticity equation ⓘ |
| requires | background zonal flow specification ⓘ |
| usedFor |
analysis of large-scale atmospheric waves
ⓘ
simplified numerical weather prediction models ⓘ theoretical study of baroclinic instability ⓘ |
| usedIn |
idealized climate and circulation models
ⓘ
large-scale atmospheric dynamics ⓘ synoptic-scale meteorology ⓘ theory of Rossby waves ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Charney equation Description of subject: The Charney equation is a fundamental quasi-geostrophic equation in atmospheric dynamics that describes large-scale Rossby waves and mid-latitude weather patterns on a rotating planet.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.